I have been doing Xenial -> Bionic -> Focal release upgrades and started running into this apparmor issue with dhclient after reaching Focal.
I don't know the root issue, and it doesn't appear to impact functionality (at least as far as I can tell on my hosts). However, I am currently dealing with this by adding the following to /etc/apparmor.d/local/sbin.dhclient:
I have been doing Xenial -> Bionic -> Focal release upgrades and started running into this apparmor issue with dhclient after reaching Focal.
I don't know the root issue, and it doesn't appear to impact functionality (at least as far as I can tell on my hosts). However, I am currently dealing with this by adding the following to /etc/apparmor. d/local/ sbin.dhclient:
@{PROC} /[0-9]* /task/[ 0-9]*/comm rw,